How do you view what a package is "going to do"?

I'm looking at installing elmah for mvc, and saw this package: http://nuget.org/List/Packages/Elmah.Contrib.Mvc, and http://nuget.org/List/Packages/elmah.sqlserver. The details of what each does is sparse, and makes it impossible to know if these packages
are compatible with each other. For example, does the MVC one install the base elmah library? Should I install these in a particular order? Will they overwrite each others configuration?

So the main question is, how do I get more details about what the packages *actually* do? What scripts do they run, what are their dependencies? At this point I'm just going to try stuff out, but I shouldn't really have to do that with a package manager;
it should be very clear what it's going to do.